I think it was <span>Rosalind Franklin who discovered what DNA was made up of.
</span>James Watson and Francis Crick discovered the double helix shape of DNA and also created a 3d model of it, so it's not B nor C.
To my understanding (you should double check) the answer is D
The pesticides found on the foods and are being stored in
the body tissues is a process that is called the bio accumulation. This process
is done when foods ingested containing pesticides are not metabolized or has
excreted in the body of a person, it will undergo to fat tissues as it is
stored—resulting pesticides to accumulate a high concentration in the person’s
body.
Positive: You get to see different animals, see all kinds of habitats, learn new facts about all the animals and see them maybe in action!
Negative: They might be sleeping, In a cage or fence so they can't get out, restricted.